91432853248 has 72 divisors (see below), whose sum is σ = 199170475056. Its totient is φ = 41545728000.

The previous prime is 91432853191. The next prime is 91432853257. The reversal of 91432853248 is 84235823419.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14507698 + ... + 14513998.

It is an arithmetic number, because the mean of its divisors is an integer number (2766256598).

Almost surely, 2^91432853248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91432853248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99585237528).

91432853248 is an abundant number, since it is smaller than the sum of its proper divisors (107737621808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91432853248 is a wasteful number, since it uses less digits than its factorization.

91432853248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11481 (or 11467 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 49.

The spelling of 91432853248 in words is "ninety-one billion, four hundred thirty-two million, eight hundred fifty-three thousand, two hundred forty-eight".